diff --git a/AppKit/CPProgressIndicator.j b/AppKit/CPProgressIndicator.j
index 520851640..527b652c9 100644
--- a/AppKit/CPProgressIndicator.j
+++ b/AppKit/CPProgressIndicator.j
@@ -464,3 +464,43 @@ var CPProgressIndicatorSpinningStyleColors  = nil,
 }
 
 @end
+
+
+@implementation CPProgressIndicator (CPCoding)
+
+- (id)initWithCoder:(CPCoder)aCoder
+{
+    if (self = [super initWithCoder:aCoder])
+    {
+        _minValue                   = [aCoder decodeObjectForKey:@"_minValue"];
+        _maxValue                   = [aCoder decodeObjectForKey:@"_maxValue"];
+        _doubleValue                = [aCoder decodeObjectForKey:@"_doubleValue"];
+        _controlSize                = [aCoder decodeObjectForKey:@"_controlSize"];
+        _isIndeterminate            = [aCoder decodeObjectForKey:@"_isIndeterminate"];
+        _style                      = [aCoder decodeObjectForKey:@"_style"];
+        _isAnimating                = [aCoder decodeObjectForKey:@"_isAnimating"];
+        _isDisplayedWhenStoppedSet  = [aCoder decodeObjectForKey:@"_isDisplayedWhenStoppedSet"];
+        _isDisplayedWhenStopped     = [aCoder decodeObjectForKey:@"_isDisplayedWhenStopped"];
+        _barView                    = [aCoder decodeObjectForKey:@"_barView"];
+    }
+
+    return self;
+}
+
+- (void)encodeWithCoder:(CPCoder)aCoder
+{
+    [super encodeWithCoder:aCoder];
+
+    [aCoder encodeObject:_minValue forKey:@"_minValue"];
+    [aCoder encodeObject:_maxValue forKey:@"_maxValue"];
+    [aCoder encodeObject:_doubleValue forKey:@"_doubleValue"];
+    [aCoder encodeObject:_controlSize forKey:@"_controlSize"];
+    [aCoder encodeObject:_isIndeterminate forKey:@"_isIndeterminate"];
+    [aCoder encodeObject:_style forKey:@"_style"];
+    [aCoder encodeObject:_isAnimating forKey:@"_isAnimating"];
+    [aCoder encodeObject:_isDisplayedWhenStoppedSet forKey:@"_isDisplayedWhenStoppedSet"];
+    [aCoder encodeObject:_isDisplayedWhenStopped forKey:@"_isDisplayedWhenStopped"];
+    [aCoder encodeObject:_barView forKey:@"_barView"];
+}
+
+@end